PhysicsNEET 2021Self and mutual inductance

Electromagnetic Induction

Two conducting circular loops of radii $R_{1}$ and $R_{2}$ are placed in the same plane with their centres coinciding. If $R_{1} ≫ R_{2}$ , the mutual inductance $M$ between them will be directly proportional to:

A. $\frac{R _{1}}{R _{2}}$
B. $\frac{R _{2}}{R _{1}}$
C. $\frac{R _{1}^{2}}{R _{2}}$
D. $\frac{R _{2}^{2}}{R _{1}}$ ✓

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Electromagnetic Induction

More from this chapter in past papers